Investment in Debt Securities - Cost Basis and Fair Value of Available-for-Sale Debt Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-Sale [Line Items]
Total debt securities - available-for-sale	$ 12,998	$ 17,230
Unrealized Gain, net	172	168
Fair Value	13,170	17,398
U.S. treasury bonds
Debt Securities, Available-for-Sale [Line Items]
Total debt securities - available-for-sale	12,998	17,230
Unrealized Gain, net	172	168
Fair Value	$ 13,170	$ 17,398